Watch Online HD on HDtoday. The life and musical work of Brazilian zoologist and composer Paulo Vanzolini, author of very popular songs such as "Ronda," "Volta por Cima," and "Na Boca da Noite," recording tributes to the composer, which brought together big names in Brazilian music such as Inezita Barroso, Chico Buarque, Paulinho da Viola, and Martinho da Vila.